煤岩组分与高压电选关系的研究

Research on the Relationship between Coal Petrography Composition and Electrical Separation at High Voltage

通过对不同煤岩组分的介电性质及其在电选机上分选行为的研究,指出不同煤岩组分介电常数有较大差异,镜煤、亮煤及富含稳定组的暗煤介电常数较小,而富含惰性组和矿物质的暗煤和丝炭介电常数较大。由此可知,电选可以进行岩相选矿,除去煤中有害杂质丝炭,对煤炭产品深加工具有重要意义。

Through research on dielectric properties of different coal petrography composition and coal separation effected in separating machine based on this dielectric property difference, it is shown that different coal petrography composition always more differs in dielectric constant and specular coal, bright coal and stable component - rich attritus has a smaller dielectric constant, however, inert component - rich and mineral matter- rich attritus and fusite has a larger dielectric constant. Therefore, lithofacies mineral concentration can be carried out by use of electric separation, for removal of harmful impurity fusite. This can not be done with other clean coal preparing method.